Ошибка c++ может кто знает.

 #include  
#include "ref.h" 
class Hello_world 
{ 
public: 
	const char*  x; 
private: 
	int switcher = 1; 
public: 
	void hello_world_function() 
	{ 
		if (switcher > 0) 
			std::cout << x << std::endl; 
		else 
			text_out("you dont have permission"); 
	} 
}; 
int main()  
{ 
	Hello_world hello_world; 
	static int choose_number = 2; 
	//if you want to do some math make choose_number = 1 
	//else if you want to start Hello World programm make choose_number = 2 
	//else if you want back to choose make choose_number = 0 
	if (choose_number == 0) 
	{ 
		text_out("chose the option..."); 
		space(); 
		text_out("open code and follow instructions to choose the option"); 
		space(); 
	} 
	else if (choose_number == 1) 
	{ 
		static int number = 10; 
//make number = (your number) 
		static int& ref = number; 
		text_out("initialization program..."); 
		space(); 
		text_out("let's make some math"); 
		space(); 
		sum_and_out(ref); 
		space(); 
		text_out("open code and follow instructions if you want to switch the number of math operation"); 
		space(); 
		text_out("if you want back to choose make choose_number = 0"); 
			space(); 
		text_out("programm execute: enter"); 
	} 
	else if (choose_number == 2) 
	{ 
		hello_world.x = "Hello World!"; 
		hello_world.hello_world_function(); 
		space(); 
		Hello_world hello_world2; 
		hello_world.x = "Hello Planet!"; 
		hello_world2.hello_world_function(); 
		space(); 
		text_out("if you want back to choose make choose_number = 0"); 
	} 
std::cin.get(); 
}